Momentum and Collisions Review

According to the law of conservation of momentum, what happens to momentum lost by one object?

• It disappears.

• It is gained by the other object.

• It is converted to energy.

• It remains with the object.

What does Newton's third law state?

• For every action, there is an equal and opposite reaction.

• Objects in motion stay in motion.

• Force equals mass times acceleration.

• Energy cannot be created or destroyed.

What is the relationship between the forces two objects exert on each other during a collision?

• They are equal in size and opposite in direction.

• They are unequal in size and same in direction.

• They are equal in size and same in direction.

• They are unequal in size and opposite in direction.

What is the significance of the time the force acts on objects during a collision?

• It is different for each object.

• It is equal for both objects.

• It is longer for the heavier object.

• It is shorter for the lighter object.

What does the principle of momentum conservation imply about momentum in a system?

• Momentum can appear or disappear.

• Momentum is always conserved.

• Momentum is only conserved in closed systems.

• Momentum is only conserved in open systems.

What is the formula representing the forces exerted by two objects on each other?

• F_{1 on 2} = F_{2 on 1}

• F_{1 on 2} = -F_{2 on 1}

• F_{1 on 2} > F_{2 on 1}

• F_{1 on 2} < F_{2 on 1}

What is the role of time in the forces acting during a collision?

• It determines the magnitude of force.

• It is irrelevant to the force.

• It is equal for both objects.

• It varies for each object.

What does the equation t₁ = t₂ signify in a collision?

• Different times for different objects

• Equal times for both objects

• Longer time for heavier object

• Shorter time for lighter object

How much momentum does the dropped brick gain after the collision?

• 0 units

• 14 units

• 31 units

• 45 units

Two billiard balls collide. Identify the type of collision.

• elastic

• perfectly elastic

• inelastic

• perfectly inelastic

Tags

NGSS.HS-PS2-2